Solar System Calculator is a free Android application developed by Kostadin Tonev. As the name suggests, the app lets you calculate your age and weight on other planets in our solar system. The app is easy to use and has a visually appealing interface. With Solar System Calculator, you can now know your age and weight on Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, and even Pluto.

One of the latest updates to the app is that it now supports speech. It is now possible to listen to the app's output instead of just reading it. Additionally, the app provides a preview picture for each planet and tapping on it opens a page with information about the planet. Overall, Solar System Calculator is a fun and useful tool for anyone interested in space and the planets in our solar system.